Asked by Kelly

Every insect's behavior is instinctive; it knows how to act and what to do from the moment it is born.

Is insect's singular or plural and why?

Answered by Ms. Sue
Consider these constructions:

Every man's behavior . . .
Every child's behavior . . .


What about insect's?

Answered by Kelly
So singular
Answered by Ms. Sue
Right. The adjective, "every" denotes a singular noun.